v3.25.2
Goodwill, Spectrum License Transactions and Other Intangible Assets - Schedule of Spectrum Licenses (Details) - Licensing Agreements
$ in Millions
6 Months Ended
Jun. 30, 2025
USD ($)
Indefinite-lived Intangible Assets [Roll Forward]  
Spectrum licenses, beginning of year $ 100,558
Spectrum license acquisitions 1,043
Spectrum licenses transferred to held for sale (5,674)
Costs to clear spectrum 1
Spectrum licenses, end of period $ 95,928